CN209248302U - A kind of STRONG MOTION DATA acquisition device based on wireless technology - Google Patents
A kind of STRONG MOTION DATA acquisition device based on wireless technology Download PDFInfo
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- CN209248302U CN209248302U CN201920155546.2U CN201920155546U CN209248302U CN 209248302 U CN209248302 U CN 209248302U CN 201920155546 U CN201920155546 U CN 201920155546U CN 209248302 U CN209248302 U CN 209248302U
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Abstract
The utility model discloses a kind of STRONG MOTION DATA acquisition device based on wireless technology, including acceleration transducer, analogue signal processor, modulus signal converter, master cpu controller, long distance wireless 4G communication system, GPS time dissemination system, power conversion module and wind-photovoltaic complementary power supply system；There are three acceleration transducers, is connect respectively by respective analogue signal processor with modulus signal converter；Modulus signal converter is bi-directionally connected with master cpu controller；Master cpu controller is bi-directionally connected with long distance wireless 4G communication system and GPS time dissemination system respectively.The utility model carries out data communication using the mobile 4G mechanics of communication that current large area uses, and monitoring network is laid in a wide range of monitoring that can be realized strong earthquakes system, so that it is guaranteed that the reliability of strong earthquakes monitoring.The features such as there is the utility model flat frequency characteristic response, phase to change linearly, and technical parameter consistency is good, stable and reliable for performance and low-power consumption.
Description
Technical field
The utility model relates to strong motions to monitor field, and especially a kind of STRONG MOTION DATA based on wireless technology acquires dress
It sets.
Background technique
The instrument of relevant parameter when STRONG MOTION DATA instrument is a kind of generation of monitoring earthquake, record earthquake generation.STRONG MOTION DATA
Instrument is the automatic touch trigger seismic detector for recording violent earthquake movement near the ground, generally by picking up shake system, record system, triggering-
Dynamic system, timing system and five part of power-supply system are constituted.With national economic and social development, seismic network monitoring is set up in country
Earthquake obtains seismic data, while providing that civil infrastructure and special building structure will also install earthquake monitoring device.Ground
Shake itself occurs to be exactly intensity and influence to be even more to have no way of predicting unpredictable, that earthquake occurs, this just proposes monitoring device
Very strict requirement.And the current more dependence wire transmission of strong earthquakes monitoring, and data acquisition, transmission and processing are
It is respectively independently performed, usually after the earthquake, STRONG MOTION DATA instrument stores earthquake record data to instrument internal, many feelings
Condition transmission line is deteriorated, and by data retrieval and carries out data analysis to scene after needing personnel to shake, at this moment strong with regard to some
Shake instrument leads to loss of data since the superpower destruction of earthquake or aftershock damages strong-motion instrument thoroughly, cannot be complete
Analyze this earthquake effect and data accumulation.Furthermore wire transmission is due to needing a large amount of wirings, and engineering site area is big, model
It encloses and extensively is difficult to realize monitor on a large scale, this is just that complete analysis Seismic influence field brings difficulty.Traditional seismic instrument needs
Using 220V power supply power supply, some also uses backup power source, but water, electricity, building etc. when big ruinous earthquake occurs
Will be seriously damaged, there may come a time when for a long time can not all restore, the multiple aftershock occurred during this in this way all without
Method record, can not achieve the completely recorded of one earthquake.Traditional seismic detector earthquake record limited storage space causes once
The record data of shake cannot fully meet the requirement of data space.
Utility model content
The purpose of this utility model is to design a kind of STRONG MOTION DATA acquisition device based on wireless technology, solves traditional macroseism
The problem of recorder wired data transfer, solves traditional STRONG MOTION DATA instrument powerup issue, solves traditional STRONG MOTION DATA instrument data and deposits
The problem of storing up space realizes a wide range of, uninterrupted consecutive shock monitoring.
To achieve the goals above, the technical solution of the utility model is as follows:
A kind of STRONG MOTION DATA acquisition device based on wireless technology, including acceleration transducer, analogue signal processor, mould
Number signal adapter, master cpu controller, long distance wireless 4G communication system, GPS time dissemination system, power conversion module and scene
Complementary power supply system；
There are three the acceleration transducers, is North and South direction acceleration transducer, east-west direction acceleration biography respectively
Sensor and perpendicular direction acceleration sensor, the North and South direction acceleration transducer, east-west direction acceleration transducer and
Perpendicular direction acceleration sensor is connect by respective analogue signal processor with modulus signal converter respectively；The mould
Number signal adapter is bi-directionally connected with master cpu controller；The master cpu controller is communicated with long distance wireless 4G respectively
System and GPS time dissemination system are bi-directionally connected；
The power conversion module is connect with wind-photovoltaic complementary power supply system, respectively with acceleration transducer, analog signal
Processor, modulus signal converter, master cpu controller, long distance wireless 4G communication system are connected with GPS time dissemination system；
The acceleration transducer is high-precision force-balanced accelerometer；The high-precision force balance acceleration
Sensor is a kind of ultralow frequency acceleration transducer, and the performance frequencies of itself are responded since 0Hz, and output end and simulation are believed
The connection of number processor；
Full scale ± 5V the vibration signal that the analogue signal processor obtains acceleration transducer is improved into satisfaction
The signal that modulus signal converter requires；
The modulus signal converter is realized by the logic control of periphery standard configuration circuit and master cpu controller
Conversion of the analog signal to digital signal；
The master cpu controller realize the acquisitions of acceleration transducer data, data management of computing, data storage with
Earthquake record file management, seismic algorithms and control logic, long distance wireless data communication and the data friendship with remote monitoring software
Mutually；
The GPS time dissemination system realizes that UTC time is subject in the work of whole device, when meeting International Seismic record
Between General Requirement；
The long distance wireless 4G communication system realizes long distance wireless data using wireless 4G transparent data communication module
Communication.
Further, the acceleration transducer is FBA12 high-precision force-balanced accelerometer.
Further, the circuit of whole device is designed using multilayer circuit board.
Further, whole device uses the electronic component of low-power consumption universal industrial grade.
Further, whole device uses virtual instrument design of electronic circuits technology.
Further, the master cpu controller uses 32 based on the ARMv7 framework Cortex-M3 of ARM company
MCU-STM32 chip of microcontroller core.
Further, the long distance wireless 4G communication system uses the wireless 4G module of technical grade WH-LTE-7S4.
Compared with prior art, the utility model has the following beneficial effects:
1, its 32 completely new based on ARMv7 framework that the master cpu controller of the utility model is released using ARM company
MCU-STM32 of position Cortex-M3 microcontroller core.STM32 relies on diversified, the high cost performance of its product line, letter
Single easy-to-use library development scheme, shows one's talent rapidly in numerous Cortex-M3MCU, becomes a most glittering nova.This is
System is selected the STM32429 that performance is more excellent in STM32 family to carry out system control and is calculated with data, the structure that system acquisition arrives
Data directly carry out the calculating of seismic data algorithm by the powerful data-signal processing tally function of STM32, data store, long-range
The work such as communication.
2, the utility model carries out data communication using the mobile 4G mechanics of communication that current large area uses, and currently moves 4G
Technology communication robust is reliable, covers a wide range, it is ensured that system communication stablizes safety, can be realized the big model of strong earthquakes system
It encloses monitoring and lays monitoring network.Using so that system monitoring does not need to be routed for wireless communication technique, reduces field monitoring process
In many link, so that it is guaranteed that the reliability of strong earthquakes monitoring.
The utility model selects the mature wireless 4G module of technical grade WH-LTE-7S4 to communicate wirelessly.WH-LTE-7S4
The mature and stable communication robust for ensuring whole system of wireless 4G module is reliable, realizes the requirement of large area real-time data communication.
The network monitor of strong earthquakes may be implemented by monitoring center for the utility model, carry out data friendship with more macroseism monitoring systems
Mutually, a wide range of strong earthquakes monitoring of large area may be implemented.
3, the acceleration transducer of the utility model is selected to obtain complete effective strong earthquakes monitoring data
High-precision acceleration transducer, sensor itself is a kind of unidirectional broadband acceleration transducer, using dynamic balance electronics
Single point is really converted into vibration acceleration voltage signal output by feedback and Electromechanical Design, realize to various low frequencies,
The vibration measurement of ultralow frequency, has that precision high, highly sensitive output, high dynamic range, the linearity be good, low frequency (since 0Hz
The characteristics of shaking signal requires to use the acceleration transducer with 0 frequency starting as geophone), there is flat frequency characteristic to ring
Answer, phase changes linearly, technical parameter consistency is good, stable and reliable for performance, low-power consumption, it is small in size the features such as.
4, the circuit of the utility model is designed using multilayer circuit board, and multilayer circuit board packaging density is high, small in size, quality
Gently, since packaging density is high, the line between each component (including component) is reduced, and improves reliability；Increase the wiring number of plies, increases
Design flexibility；The circuit with a constant impedance can be constituted；High speed transmission circuit can be formed；Settable circuit, magnetic circuit shielded layer,
Also settable metal core heat dissipating layer is to meet the functions needs such as shielding, heat dissipation；Debugging is simple, high reliablity.
5, the utility model selects the electronic component of low-power consumption universal industrial grade.Low-power electronic devices can be reduced
It unites requirement to power supply, can reduce system heat generation and the requirement that leads to the problem of；Technical grade electronic device can increase system
System stability is improved in actual work temperature space.
6, the utility model uses virtual instrument design of electronic circuits technology, virtual instrument technology (Virtual
Instrument) be exactly using high performance modularized hardware, in conjunction with high efficient and flexible software come complete various tests, measurement and
The application of automation.Compared with other technologies, virtual instrument technology has four big advantages: performance is high, scalability is strong, when saving
Between, Seamless integration-.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of the utility model.
Fig. 2 is the acceleration transducer of the utility model, analogue signal processor circuit diagram.
Fig. 3 is modulus signal converter, master cpu controller core core (SD card memory) and GPS time dissemination system circuit
Schematic diagram.
Fig. 4 is long distance wireless 4G communication module, controllable power source chip and power conversion module circuit diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.As shown in Figure 1, a kind of macroseism based on wireless technology
Record acquisition device, including acceleration transducer, analogue signal processor, modulus signal converter, master cpu controller, remote
Journey is wireless 4G communication system, GPS time dissemination system, power conversion module and wind-photovoltaic complementary power supply system.
As shown in Fig. 2, further, the analogue signal processor includes operational amplifier U1 and U2；Acceleration passes
The output end of sensor is connected by resistance R1 with 2 feet of operational amplifier U1, the output termination of acceleration transducer is protected simultaneously
Pipe D1 carries out the limitation protection of discharge voltage amplitude, while 2 feet of operational amplifier U1 and 6 foot series resistor R3 and multi-turn are high-precision
Potentiometer T1 is spent, connecting resistance R2, the operational amplifier U1, resistance R3, potentiometer T1, resistance R2 constitute -0.5 to 3 feet over the ground
Times inverting amplifier, since acceleration transducer Full-span output signal is ± 5V, modulus signal converter full scale input letter
Number ± 2.5V realizes the matching of full scale signal by operational amplifier U1 here, and accurate multiturn potentiometer T1 is for adjusting fortune
Calculate the amplification factor adjustment of amplifier U1 in-phase amplifier circuit, it is ensured that the requirement of measurement accuracy；
4 feet of operational amplifier U1 are negative supplies, and 7 feet are positive supplies；+ 12V power supply passes through resistance R4 and operational amplifier
7 feet of U1 connect while connection filter capacitor C2, resistance R4 and filter capacitor C2 constitutes RC power filter network over the ground, guarantee fortune
Calculate the power good of amplifier U1；- 12V power supply connects by resistance R5 with 4 feet of operational amplifier U1 connect filter over the ground simultaneously
Wave capacitor C1, resistance R5 and filter capacitor C1 constitute RC power filter network, guarantee the power good of operational amplifier U1；
1 foot and 8 feet of operational amplifier U1 meets accurate multiturn potentiometer T2, for adjusting the zero of advance signal processing circuit
Point offset；
The signal output of operational amplifier U1 connects 2 feet of operational amplifier U2 by resistance R1, and the 2 of operational amplifier U2 connect
Connected by the resistance R1 of same resistance value with 6 feet of output, the operational amplifier U2 and two resistance R1 constitute -1 times reversely
Amplifier, 3 feet of operational amplifier U2 connecting resistance R2 over the ground.Operational amplifier U1 and U2 realize that signal two-stage is reversely amplified, real
Existing acceleration transducer signals Polarity restoration is at original acceleration sensor signal.
4 feet of operational amplifier U2 are negative supplies, and 7 feet are positive supplies；+ 12V power supply passes through resistance R4 and operational amplifier
7 feet of U2 connect while connection filter capacitor C2, resistance R4 and filter capacitor C2 constitutes RC power filter network over the ground, guarantee
The power good of operational amplifier U2；- 12V power supply connects by resistance R5 with 4 feet of operational amplifier U2 to be connect over the ground simultaneously
Filter capacitor C1, resistance R5 and filter capacitor C1 constitute RC power filter network, guarantee the power good of operational amplifier U1.
As shown in figure 3, respectively corresponding the acceleration transducer in three directions there are three analogue signal processor U3；Tripartite
Directly divided by analogue signal processor treated signal through 6 foot of output of operational amplifier U2 to acceleration transducer signals
Do not connect with AIN1, AIN2, AIN3 of modulus signal converter U3.Modulus signal converter U3 is a 24 high-precisions, height
Speed, low-power consumption modulus signal converter, the AFE(analog front end) in 2/3 channel applied to low frequency measurement；The device receive directly from
The low level input signal of acceleration transducer, then generates serial numeral output；24 are realized using sigma-delta switch technology
Position is without loss code performance；Selected input signal is sent to the dedicated front end of a gain programmable based on analog modulator,
The output signal of digital filter processing modulator, passes through modulus signal converter chip internal control in modulus signal converter chip
Register processed adjusts the cut off and output renewal rate of filter；Modulus signal converter chip serial line interface is configured to three lines
Interface；Single+5V power supply, input voltage range ± 2.5V.
2 feet and 3 feet of modulus signal converter U3 meet crystal oscillator Y1, and crystal oscillator Y1 is converted as modulus signal
The master clock of device U3, while 2 feet and 3 feet pick up vibration capacitor C15 over the ground.When the frequency of master clock is 2.4576MHz, first is fallen into
The programmed range of wave frequency rate is 50Hz~500Hz, and the range of -3dB frequency is 13.1Hz~131Hz.According to the spy of seismic data
Point, efficiently sampling frequency need to fully meet the demand of seismic monitoring by software cooperation using 100Hz.
The analog signal range of modulus signal converter U3 is ± 2.5V, is needed using reference voltage, benchmark voltage stabilizing chip
U4 provides 1.25V reference voltage output, and the power input and 1.25V output end of benchmark voltage stabilizing chip U4 uses capacitor C3, C4
Over the ground, decoupling operation is carried out.Benchmark voltage stabilizing chip U4 is the voltage of the high-precision of small 3 pin SOT-23 encapsulation, low-power consumption
Benchmark.Modulus signal converter U3 is 5V power supply, and master cpu controller U5 is 3.3V power supply, they there are level mismatch, it
Between communication need to use electrical level transferring chip.Level conversion is carried out with 3 U12, wherein two panels is powered using 5V, master control
The U12 that cpu controller powers to control signal RESET, DIN, CS, SCLK of the 3.3V level of modulus signal converter by 5V
Modulus signal converter U4 is sent after carrying out level conversion；Modulus signal converter U4 gives the 3.3V level of master cpu controller
Status signal and conversion after the U12 that is powered by 3.3V of digital signal carry out level conversion after give master cpu controller.
Electrical level transferring chip U12 power supply over the ground, carries out decoupling operation using capacitor C3.
As shown in figure 3, the master cpu controller includes cpu chip U5, GPS time dissemination system U6, the storage of SD card data
Device U9.
The core cpu plate module U5 controls the work of all logic function chips, at the same carry out data algorithm with
The management of data storage.Core cpu plate module U5 itself has debugging interface, and user is without the concern under artificial debugging and program
The problem of load.The kernel of the main control chip STM32f429 of core cpu plate module U5 is with FPU32- M4CPU, realize that adaptive real-time accelerator, that is, ART of zero wait state runnability adds in flash storage
Fast deviceTM, dominant frequency be up to 180MHz, MPU, can be realized up to 225DMIPS/1.25DMIPS/MHz's (Dhrystone 2.1)
Performance has DSP instruction set；Its memory is up to 2MB Flash, organizes as the area Liang Ge, and read-write synchronization includes up to
The SRAM of 256+4KB, CCM (kernel coupled memory) data RAM including 64-KB, the spirit with up to 32 bit data bus
External storage controller living: SRAM, PSRAM, SDRAM/LPSDRSDRAM, Compact Flash/NOR/NAND memory etc..
Its powerful basic property fully meets the demand of the utility model design.
The reset circuit of the core cpu plate module U5 is made of the end NRST for being connected to U5, the one end R10 R10 and C11
3.3V is met, the one end C11 ground connection powers on and drags down reset.BOOT load mode selects terminal J1, carries out selection using short-circuit son and connects
3.3V is still grounded, and BOOT0 and BOOT1 loading meet current-limiting resistance R10, and program load mode is according to practical debugging and full speed running
Situation, when circuit debugging process it is possible that program work is abnormal, is at this moment connect using short-circuit son using short circuit son setting
3.3V is still grounded, and system is resumed work.
The power conversion chip U8 completion+5V power supply is converted into+3.3V power supply and deposits for master cpu chip U5, data
Reservoir U9 is used；Input+5V the power supply of power conversion chip U8 and the 3.3V power supply of output are decoupled using capacitor C8 and C3
Filtering, it is ensured that the stabilized input voltage of power conversion chip U8.
The data storage U9 is SD card, the storage of earthquake record data is carried out using SD card, due to the storage of SD card
Capacity is very big, according to circumstances selects 2G, 4G or bigger memory space, the storage of a large amount of earthquake record data may be implemented,
Thousands of aftershocks can realize complete documentation when similar Wenchuan County in Sichuan earthquake, without replacing storage medium, so as to reality
The complete probability of existing one earthquake；SD card is widely used on portable device, is a kind of important for embedded device
Storing data component can be directly written and read, and also can be written into file system, then used file system read-write function, made
With file system operation, the data read-write operation of the SD card bottom can be carried out, directly using SDIO structure function to SD card into
Row read-write.SD card is powered using 3.3V and is provided by power conversion chip U8, and data storage U9 feeder ear is carried out using capacitor C3
Power decoupling；The number of pins 1,2,3,7,8 of data storage U9 connect respectively draw 3.3V resistance R10, while respectively with CPU core
49,50,51,53, the 54 of core module U5 number of pins connect, and the number of pins 5 and core cpu plate module U5 of data storage U9 is managed
The 52 of foot number connect；The number of pins 5,10,11,12,13 of data storage U9 is grounded, and 4 feet meet 3.3V, other pins do not connect.
The long distance wireless 4G communication system includes wireless 4G communication interface chip U10 and power conversion chip chip
U11 is completed, and physical circuit is as shown in Figure 4.Also promising GPS time dissemination system and cpu chip U5 provide the power supply of working power in Fig. 4
Conversion module.The power conversion module is completed by DS1 and DS2.The long distance wireless datacom chip U10 is to realize
The functional module of wireless telecommunications is a compact, and the feature-rich wireless connection product based on 4G communication is suitable for moving
Dynamic, connection, telecommunications 4G and movement, connection 3G and 2G network formats；Using " transparent transmission " as leitungskern, height ease for use is used
The packing forms of double-row needle, user can be integrated in easily and fast in the system of oneself.Module software perfect in shape and function, covering are big absolutely
Most routine application scenarios, user only need to by being simply arranged, can be realized serial ports to network bi-directional data transparent transmission.
And support customized registration packet, the functions such as heartbeat packet support 2 road Socket connections, support the protocol communications such as http.With height
The characteristics of rate, low delay.Long distance wireless datacom chip U10 using 3.8V power, by power conversion chip U11 realize+
5V voltage converts output+3.8V power supply；
Power conversion chip U11 is high-precision, high stability, the adjustable regulated power supply conversion chip of voltage, reconciles resistance
The resistance value of R11, R12 realize 3.8V output, and 1,2 feet of long distance wireless datacom chip U10 meet+5V, and 3 feet are grounded, and 4 feet are defeated
Out, while 5 foot of another termination connecting resistance R12 over the ground simultaneously of 4 foot connecting resistance R11, resistance R11.Voltage output formula Vout=
1.24* [1+ (R11/R12)], the resistance value for reconciling resistance R11 and R12 realize the output of 3.8V power supply.Long distance wireless data communication core
Piece U10 voltage representative value 3.8V, supply district 3.4-4.2V, peak value supply current 2.5A, when long distance wireless datacom chip
When being powered using 3.8V, 16 feet are used to provide 3.8V operating voltage, power conversion chip U11 to long distance wireless datacom chip
The 3.8V supply voltage of output send the 16 of long distance wireless datacom chip U10 after the bulky capacitor network and shunt capacitance through placing
Foot, bulky capacitor network prevent external power supply from Voltage Drop occur within the pulse current period, connect shunt capacitance and play stable mode
The effect of block work.Long distance wireless datacom chip U10 provides the SIM card interface for meeting ISO 7816-3 standard, automatically
It identifies 3.0V and 1.8V SIM card, under mode standard, provides the clock signal of 3.25MHz to usim card；In low-power consumption mode
Under, the clock signal of 1.08MHz is provided to usim card；Support clock shutdown mode；By adjusting baud rate parameter, speed is supported
Enhanced usim card；Support DMA transmission/reception；Support the automatic power save mode under cancellation mode；Under RX mode, support certainly
Dynamic even-odd check, long distance wireless datacom chip U10 have integrated SIM card function, directly use；The number of pins 20 of chip U10,
21,22,23 4 pins directly connect with SIM card (needing on circuit board using SIM card holder), and four pins need to connect over the ground
TVS (transient diode) protection diode, due to often carrying out inserting or pull out the operation of usim card, and human body has electrostatic,
Electrostatic damages usim card and chip in order to prevent, needs to increase TVS pipe and carries out electrostatic protection, arranges as ESD antistatic
It applies；Capacitor C14 is met over the ground simultaneously, and 20 feet will also meet C3 over the ground, filter out the interference of radiofrequency signal；Long distance wireless data communication core
The number of pins 9 of piece U10 is that working status indication signal send core cpu plate module U5 pin 9, due to long distance wireless data communication core
Piece U10 and core cpu plate module U5 power supply electrical level mismatch, and need to realize 3.8V using triode Q1 resistance R13, power supply 3.3V
Level signal is converted into 3.3V level signal, and core cpu plate module U5 obtains the work shape of long distance wireless datacom chip U10
State；6,7 feet of long distance wireless datacom chip U10 default 3.3V level, can directly connect with core cpu plate module U5,
Connect respectively with 92,24 feet of core cpu plate module U5；11,12 feet of long distance wireless datacom chip U10 are grounded, other
Pin does not connect vacantly.
GPS time dissemination system U6 is required according to international earthquake record, and system time is carried out using world's unified time
Earthquake record.The SKG17A that GPS time dissemination system U6 is used is a complete GPS module, and sensitivity accuracy is high, super low-power consumption
With minimum encapsulation；GPS signal obtains information from antenna, and the complete serial data information with position, speed and time letter
For breath also in serial data, it is the sensitivity based on high performance single chip architecture, with -165dBm, and 10nS time service precision is complete
The requirement of high-precision, field environment that full up foot earthquake monitoring system requires, positioning covering are expanded to as city, valley and dense
The environment such as forest in, it is possible for obtaining GPS information；Small package low-power consumption is readily applied to module in system and is integrated into
In portable device.GPS time dissemination system U6 is powered using 3.3V, and controllable power source chip U7 is used alone and carries out power supply conversion in fact
It is existing.1 foot+the 5V of power input of controllable power source chip U7 using C3, C6 carry out decoupling operation, output 5 feet using capacitor C6 into
Row decoupling operation；4 foot of power input of controllable power source chip U7 meets capacitor C7 over the ground, and 2 feet are directly grounded；Controllable power source chip
3 foot of power input of U7 is power supply conversion and control end, 25 feet of core cpu plate module U5 is directly connect, if it is considered that not using
The power supply of GPS module can be turned off when GPS, reduce power consumption.The number of pins 3,4 of controllable power source chip U7 is that serial data connects
Mouthful, respectively connecting resistance R6, resistance output to 3.3V connecting resistance R7 pull up, signal output input two lines respectively with core cpu template die
7,8 feet of block U5 connect, and carry out serial communication；The 3.3V power supply of controllable power source chip U7 output, send GPS time dissemination system U6 power supply
Processing circuit, L1, C3, C4 form power supply LC filter circuit, while power decoupling operates, so that the power supply quality of GPS is again
It is once improved, so that the data that GPS module obtains are more reliable and more stable；The number of pins 11 of controllable power source chip U7 connects over the ground
Connecting resistance R8, output meet battery BT1 to capacitor C5 simultaneously, and BT1 can improve backup power source for GPS module, when main power supply system goes out
When existing power supply trouble, backup power source starts work, and can uninterruptedly realize data stablizes output；The pipe of controllable power source chip U7
Foot 16 are antenna leads, and antenna needs to receive antenna with outdoor using the mininoise cable of 50ohm to connect, according to the actual situation
It can choose active antenna, GPS time dissemination system U6 selects active antenna, improves signal quality, number of pins 19 can be active day
Line provides power supply, and power supply output uses capacitor C3 decoupling operation；The number of pins 7,13,14,15,17 of controllable power source chip U7 connects
Ground, other pins do not connect.
The power conversion module and power supply system includes wind-photovoltaic complementary power supply system ,+12V battery, DC/DC module
DS1 and DS2 ,+12V battery input terminal are connected by decoupling filter capacitor C3 and C11 with power inductance L2, and power inductance L2 is defeated
Outlet is separately connected the input terminal of DC/DC module DS1 and DS2 again by decoupling filter capacitor C3 and C11；DC/DC module DS2
It is converted into the output of+5V single supply, out-put supply is exported by decoupling filter capacitor C3 and C4 and powered to each chip；DC/DC module
+ 12V power supply is changed into +/- 12V dual power supply and exported by DS1, and the +/- 12V power supply of output is powered directly to operational amplifier U1, U2,
It needs using two groups of C3, C11 decoupling operations.In view of work is in the place of bad environments, especially when ruinous earthquake occurs
Fully powered-off problem occurs for Shi Keneng, devises wind-photovoltaic complementary power supply system, provides power supply for whole device, under normal circumstances
Using solar energy energy storage to charge the battery, start wind power generation to charge the battery when rainy days, solar energy and wind energy
Complementation uses, may be implemented in a steady stream it is continual to charge the battery, to realize that seismic detector system can be uninterrupted, continuous steady
Fixed work.
The long distance wireless 4G communication system includes wireless 4G communication interface chip U10 and power conversion chip chip
U11 is completed, and physical circuit is as shown in Figure 4.Also promising GPS time dissemination system and cpu chip U5 provide work in physical circuit such as Fig. 4
The pressure stabilizing conversion circuit of power supply.The power conversion module is completed by DS1 and DS2.
The acceleration transducer of the utility model selects the FBA12 high-precision force of earthquake monitoring force equilibrium principle to balance acceleration
Sensor is spent, according to structured testing experience, structure monitoring acceleration transducer requires high-precision, high dynamic range, ultralow frequency etc.
Feature, FBA12 high-precision force-balanced accelerometer be it is a kind of single point to broadband acceleration transducer, using dynamic balance
Single point is really converted into voltage signal output to vibration acceleration, realizes to various by electrical feedback and Electromechanical Design
The vibration measurement of low frequency, ultralow frequency.FBA12 high-precision force-balanced accelerometer is high-precision sensor of new generation, is had
Precision is high, highly sensitive output, high dynamic range, the linearity are good, low frequency is since 0Hz, with flat frequency characteristic response,
Phase changes linearly, technical parameter consistency is good, stable and reliable for performance, low-power consumption, it is small in size the features such as, be very suitable to this reality
With novel.
The cpu chip U5 of the utility model completes the control of modulus signal converter logic, the acquisition of data, seismic algorithms meter
The functions such as calculation, seismic data storage, seismic data recording file management, long distance wireless data communication.Seismic data storage, earthquake
Data computing function that document data record management will make full use of STM32 powerful is realized.One complete earthquake record is real
Existing process is as follows: earthquake is not recurrent, and system chance in the time for earthquake not occurring is in standby, only
Be to monitor collected data cases, need the parameter pre-set at this time, generally require setting triggering mode (including
Threshold triggers, STA/LTA, STA-LTA), according to the situation setting trigger parameter value of strong-motion instrument installation, (reasonable earthquake is calculated
Method ensures that valid data generate triggering by testing the considerations of various situations, the thing of false triggering and leakage triggering cannot occur)；
While also needing that the trigger recording time is arranged, when a trigger occurs, when recording the time before needing to record triggering and being recorded after triggering
Between, this is only a complete earthquake record, that is to say, that triggering occurs all to include many seismic structurals in the data of front and back
Information, there can be no record incomplete situation；The problem of there is provision of remote alarms simultaneously, when triggering first time
Afterwards, it needs to start remote alarms mechanism, make efforts to make various rescue reactions to earthquake as early as possible.The strong-motion instrument of standby condition
System monitoring data situation starts remote alarms after anti-raw triggering at the first time, starts simultaneously at record storage, work as record
It triggers again in the process, that is just continuously recorded, and until triggering terminates, this limiting case may cause a data record text
Part is very big, but the imperfect of earthquake record can not occurs, while to be also managed to a large amount of document data record.Prison
Control center can remotely wirelessly take data away, carry out necessary analysis, at that time earthquake conditions, structure it is broken
Bad situation makes analysis, provides data foundation to reduce secondary injury in earthquake rescue.In addition, the working time is with GPS time
Standard time.
All components of the utility model and connector can be bought from electronic market, and see Table 1 for details, is conducive to significantly
Manufacturing cost is reduced, and improves the performance of data collection system.
Table 1: component component and connector label table
The utility model is not limited to the present embodiment, any equivalent concepts in the technical scope that the utility model discloses
Or change, it is classified as the protection scope of the utility model.
Claims (4)
1. a kind of STRONG MOTION DATA acquisition device based on wireless technology, it is characterised in that: including acceleration transducer, analog signal
Processor, modulus signal converter, master cpu controller, long distance wireless 4G communication system, GPS time dissemination system, power supply modulus of conversion
Block and wind-photovoltaic complementary power supply system；
There are three the acceleration transducers, is North and South direction acceleration transducer, east-west direction acceleration transducer respectively
And perpendicular direction acceleration sensor, the North and South direction acceleration transducer, east-west direction acceleration transducer and vertical
Directional acceleration sensor is connect by respective analogue signal processor with modulus signal converter respectively；The modulus letter
Number converter is bi-directionally connected with master cpu controller；The master cpu controller respectively with long distance wireless 4G communication system and
GPS time dissemination system is bi-directionally connected；
The power conversion module is connect with wind-photovoltaic complementary power supply system, respectively with acceleration transducer, analog signal processing
Device, modulus signal converter, master cpu controller, long distance wireless 4G communication system are connected with GPS time dissemination system；
The acceleration transducer is high-precision force-balanced accelerometer；
The master cpu controller uses 32 based on the ARMv7 framework Cortex-M3 microcontroller core of ARM company
MCU-STM32 chip；
The long distance wireless 4G communication system uses the wireless 4G module of technical grade WH-LTE-7S4.
2. a kind of STRONG MOTION DATA acquisition device based on wireless technology according to claim 1, it is characterised in that: described
Acceleration transducer is FBA12 high-precision force-balanced accelerometer.
3. a kind of STRONG MOTION DATA acquisition device based on wireless technology according to claim 1, it is characterised in that: entire dress
The circuit set is Multi-layer circuit board structure.
4. a kind of STRONG MOTION DATA acquisition device based on wireless technology according to claim 1, it is characterised in that: entire dress
Set the electronic component using low-power consumption universal industrial grade.
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| CN201920155546.2U CN209248302U (en) | 2019-01-29 | 2019-01-29 | A kind of STRONG MOTION DATA acquisition device based on wireless technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111966012A (en) * | 2020-08-11 | 2020-11-20 | 大连大学 | Multichannel synchronous low-frequency vibration data acquisition device |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111966012A (en) * | 2020-08-11 | 2020-11-20 | 大连大学 | Multichannel synchronous low-frequency vibration data acquisition device |
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